Analysis of PID and PDF compensators for motion control systems
Ohm, D.Y.
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Volume , Issue , 2-6 Oct 1994 Page(s):1923 - 1929 vol.3
Digital Object Identifier 10.1109/IAS.1994.377694
Summary:Traditionally, the PI(D) controller has been widely used in servo
systems, while other types such as PDF (pseudo-derivative feedback)
controller has been applied in some applications. In this article,
characteristics of the above two types of compensator are analyzed by
using a generalized controller structure in which the PID and the PDF
controller are special cases. The classical frequency domain approach is
used and the results are interpreted in terms of location of the system
poles and zeros. Differences in reference tracking and disturbance
regulation performance, steady-state error, and susceptibility to the
noise and resonance are studied. The discussion starts with a velocity
loop performance and is then extended to a position loop
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